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Aviation / Aerospace

Piper L-4 Grasshopper


Light Observation Aircraft [ 1941 ]



The exemplary Piper-produced J-3 Cub series of light observation aircraft - which includes the L-4 Grasshopper - has been flying since the 1940s.



Authored By: Staff Writer | Last Edited: 08/24/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

VIEW SPECIFICATIONS [+]
The Piper L-4 Grasshopper evolved from the successful Piper Cub series that took to the air as early as 1930. By 1941, the US Army was in the market for such a light observation and liaison aircraft with rugged reliability, procured four such examples and evaluated the type as the YO-59, later ordering no fewer than 40 more as the O-59. The series saw a dedicated US Army model emerge as the O-59A (soon to be redesignated as the L-4, to which the "L" identified the aircraft series as "liaison"), a type which offered up improvements to many of the components to make the system "battlefield" ready.

At its core, the L-4 Grasshopper was of a high-wing monoplane design, braced at the fuselage, with seating accommodations for two that could include a pilot and passenger/instructor. The lightweight and rugged reliability of the system endeared it to her crews and the Grasshopper went on to provide decades of service in war and peacetime with several nations. Having been designated as the L-4 by 1942, the system was ordered for evaluation as training gliders and accepted by the USAAF (United States Army Air Forces) as the TG-8. The US Navy took on their own versions of this Grasshopper as the NE-1 and the NE-2. An ambulance version of the Grasshopper existed in later forms as the HE-1, though the "H" in the designation was soon reserved for helicopters alone, leaving the HE-1 now as the AE-1.

The L-4 Grasshopper served armed forces well over the years, concluding production in 1981, though the popularity of the system triggered the reopening of the production lines in 1988. These new line Grasshoppers, appearing with modifications and upgrades, failed to light the fires that were burning in the early years however. Some 5,500 aircraft of this series were said to be produced, though some sources put the number as high as 5,700. In any respect, the Grasshopper series proved vital for the US military in the Second World War and the Korean War.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

Specifications



Service Year
1941

Origin
United States national flag graphic
United States

Status
RETIRED
Not in Service.
Crew
1

Production
5,500
UNITS


Piper Aircraft Corporation - USA
(View other Aviaton-Related Manufacturers)
National flag of Brazil National flag of South Korea National flag of Thailand National flag of the United Kingdom National flag of the United States Brazil; Paraguay; South Korea; Thailand; United Kingdom; United States
(OPERATORS list includes past, present, and future operators when applicable)
INTELLIGENCE-SURVEILLANCE-RECONNAISSANCE
Surveil ground targets / target areas to assess environmental threat levels, enemy strength, or enemy movement.


Length
22.0 ft
(6.71 m)
Width/Span
35.2 ft
(10.74 m)
Height
6.7 ft
(2.03 m)
Empty Wgt
730 lb
(331 kg)
MTOW
1,219 lb
(553 kg)
Wgt Diff
+489 lb
(+222 kg)
(Showcased structural values pertain to the base Piper L-4 Grasshopper production variant)
Installed: 1 x Continental O-170-3 flat-four piston engine developing 65 horsepower.
Max Speed
85 mph
(137 kph | 74 kts)
Ceiling
9,301 ft
(2,835 m | 2 mi)
Range
190 mi
(306 km | 165 nm)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the base Piper L-4 Grasshopper production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)
None.


Supported Types




(Not all ordnance types may be represented in the showcase above)
YO-59 - Artillery Spotting and Liaison variants (Piper Cub Model J-3C-65) procured by the US Army for evaluation; 4 such examples.
O-59 - Official Production Model Designation assigned to 40 examples based on the YO-59 trials.
O-59A - Specialized US Army Variant Designation; fitted with Continental O-170-3 engine; later redesignated to L-4 designation.
L-4 - Redesignated from O-59A designation.
L-4H
TG-8 - USAAF Training Glider; dual controls for pilot and passenger/instructor; redesigned front fuselage; sans powerplant; 250 examples produced in the manner.
XLNP-1 - US Navy Evaluation Designation for the TG-8 training glider; 3 such examples trialled.
NE-1 - US Navy designation of J3C-65 dual-control models; 230 examples.
NE-2 - US Navy models similar to the NE-1 with slight equipment changes; 20 examples.
HE-1 - Piper J-5C Cub models procured for ambulatory service; room for one stretcher; later redesignated to AE-1.
AE-1 - Redesignated HE-1 models.


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Images Gallery



1 / 2
Image of the Piper L-4 Grasshopper
Image courtesy of the National Museum of the United States Air Force of Dayton, Ohio, USA.
2 / 2
Image of the Piper L-4 Grasshopper
Image from the Public Domain.

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